Abstract
The sophisticated scenarios always challenge MIMO(Mutiple-Input Mlitiple-Output) radar. A relaxed iterative spectrum approximation alternating projection method (RISAAP) is proposed to design phase-coded waveforms, for suppressing high range sidelobes of strong scatters, electromagnetic interference in specified frequencies and cross-interference from different signals. This method is based on power spectral density (PSD) approximation and alternating projection with extended accelerating factor. Firstly, the correlation fitting is transformed into PSD approximation via FFT between the aperiodic correlation function and PSD. Secondly, the desired spectrum constraint is formulated and the projection space is expanded by its relaxed mechanism. Finally, the iterative optimization is conducted via FFT and accelerated alternating projection. Simulations demonstrate that this method could obtain efficient performance and avoid local stagnation which seems more convenient for waveform design on-the-fly than some prevalent algorithms.
| Original language | English |
|---|---|
| Pages (from-to) | 2981-2988 |
| Number of pages | 8 |
| Journal | Tien Tzu Hsueh Pao/Acta Electronica Sinica |
| Volume | 44 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2016 |
| Externally published | Yes |
Keywords
- Alternating projection
- MIMO radar
- Phase-coded
- Power spectral density approximation
- Waveform design
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